Earlier quoted context omitted.
Most cryptocurrencies are designed such that the concept of "returning" stolen funds is not really meaningful. The best analogue is cash. If you want to return the cash you need to physically find it and move it back.
Sovereign law isn't so easily waved away, unless you are seasteading.
If someone steals steal a fiver from your back pocket then there's no magical wand that the police can wave that teleports the cash back into your hand. They need to come and get it from the kitchen table or wherever the thief has put it assuming they haven't spent it.
Most cryptocurrencies are explicitly designed to act as digital cash in this way. The system is structured such that a coin is fully under the control of the owner of the private key, there is no third party involved to effect some sort of return like a bank can.
If the coins are sitting in an exchange or some other custodian i.e. not exclusively under the control of the owner of a private key then you can effect this change by leaning on the exchange (in a legal sense).
The exchange is the bank, the coins are cash.